DRYING T-SHIRTS (:

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Broad Question

Does color affect drying time?

Specific Question

Will it take longer for yellow, red, black, white, clothes to dry?

Variables

Independent Variable:

Color of shirts

Dependent Variable:

Time (Min)

Variables That Need To Be Controlled:

Same Shirt Brand, Same washing fluid, Same temperature, drying location

Hypothesis

I hypothesize that black clothing will take longer to dry, followed by red, yellow, then white.

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Safety Or Environmental Concerns

Experimental Design

I am going to experiment the drying time of four different color t-shirts to see which color takes longer. I will conduct this experiment at my house in my laundry room. There will only be one person involved in my experiment, and that me. I am going to be the one washing the shirts, and drying them. I will be doing four trials because I have four different t-shirts. I will be recording my data on a data table I printed out. Later, I will record my information on a data table I have made on a computer at school. I will document my process by taking pictures every ten minutes to show how wet each t-shirt is. Then I will e-mail my pictures to my science teacher this will allow me to access them at school and print them so I can put it on my display board.

Materials List

• Washer
• 4 Hangers
• 4 Different colored T-shirts
• Camera
• Pencil
• Copy of Data Table
• timer

Procedure

1. Go to a store and get 4 different colored t-shirts
2. Put the t-shirts into the washer to get them wet
3. Take the wet t-shirts out of the washer
4. Hang the four t-shirts out to dry
5. Start a stop watch
6. Check the t-shirts every 10 minutes
7. Take a picture of each individual t-shirt every 10 minutes
8. When a t-shirt is dry, record the time it was dry at
9. After all the t-shirts are dry, record the data on your data table
10. Repeat steps 2-9, three more times
11. When you finish recording your data, e-mail the pictures you took to your teacher

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Background Research

The drying rooms of laundries are usually half in circulation of air, although well supplied with heat. Heat alone cannot dry the clothes; the moist air must be removed as fast as it is moistened. The humidity of the outgoing air should not be allowed to approach saturation, but should be kept as low as practicable.

When the molecules collide, they transfer energy to each other in varying degrees, based on how they collide. Sometimes the transfer is so one-sided for a molecule near the surface that it ends up with enough energy to 'escape' (evaporate).
In the most common case, a gas stream, e.g., air, applies the heat by convection and carries away the vapor as humidity Drying is amass transfer process consisting of the removal of water or another solvent.

When a liquid gains enough energy, or heat, it can overcome all of the attracting forces. Then it changes states, from a liquid to a gas. The process in which a liquid changes into a gas is called evaporation

References

Bodach, Vijaya K. States of Matter. Logan, Iowa: Perfection Learning, 2006. Print.
http://chestofbooks.com/. N.p., 2007. Web. 1 Jan. <http://chestofbooks.com/>.
Wikipedia. 16 Jan. 2012. Web. 1 Jan. <http://en.wikipedia.org/wiki/Evaporation
Wikipedia. 19 Jan. 2012. Web. 1 Jan. <http://en.wikipedia.org/wiki/Drying>.

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Results

Data Table

Graphs

Photos

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Data Analysis

Conclusion

The original purpose of this experiment was to calculate the amount of time it takes to dry four t-shirts of all different colors, red, white, black, and white. I timed the t-shirts drying time with a timer and checked them every ten minutes until they were dry. Then I recorded the time. The results of the experiment were that the yellow and the red t-shirts took the longest to dry. The white was the quickest and black dried shortly after that. Black t-shirts average time: 338. White t-shirts average time: 319. Red t-shirts average time: 346.25. Yellow t-shirt average time: 359.5

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Discussion

My hypothesis was that the black t-shirt would take longest to dry, followed by the red, then yellow, then white. My results do not support my hypothesis, except for the white t-shirt. There is a relationship between the independent and dependent variables. Some patterns and trends that my data shows are, that all of the drying times range within the same hour. The shirts with color (red, yellow) took longer to dry than the black and white shirts. I think the tests I did went smoothly. I didn’t have any problems getting the materials, or conducting the experiment. If I could improve my experiment, I would probably check the shirts every 5 minutes instead of 10 so my data would be more accurate. An interesting future study might involve trying to see if different color t-shirts took different amounts of time to dry.